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Tree vigour influences disease susceptibility of 'Hass' avocado fruits

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Willingham, S.L., Coates, L.M., Cooke, A.W. and Dean, J.R. (2004) Tree vigour influences disease susceptibility of 'Hass' avocado fruits. Australasian Plant Pathology, 33 (1). pp. 17-21.


Article Link: http://dx.doi.org/10.1071/AP03079

Publisher URL: http://www.publish.csiro.au


Differences in tree vigour as a result of feeder root destruction by Phytophthora cinnamomi were found to significantly (P < 0.05) influence disease susceptibility, fruit ripening rates and fruit size of 'Hass' avocado. Fruits from root rot-affected, non-vigorous trees had less anthracnose and took longer to ripen. However, they were probably unmarketable due to their small fruit size compared with fruits from healthy vigorous trees. Fruits from non-vigorous trees also had less pepper spot than vigorous trees, but only on the inside of the tree canopy. The increased disease resistance of fruits from non-vigorous trees was related to a 40% increase in the concentration of Ca in the fruit flesh.

Item Type:Article
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version may be available via Publisher’s website.
Keywords:Colletotrichum gloeosporioides; Phytophthora; pepper spot; nutrition.
Subjects:Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit > Stonefruit
Plant pests and diseases
Live Archive:09 Mar 2007
Last Modified:03 Sep 2021 16:47

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